Fireproof door.



0. E. MOULTON. FIREPROOF DOOR. APPLICATION FILED DEO.'11, 1907.

Patented Feb.9,19o9.`

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FIREPROOF DOOR.

Specification of Letters Patent.

Patented Feb. 9, 1909.

l Application filed December 111907. Serial No. 406,061.

To all whom it may concern:

Be it known that l, Oris E. MoUL'roN, a citizen ofV the United States, residing at Dover, in the county of Stratford and State of New Hampshire, have invented certain new and useful Improvements in Fireproof Doors, of which the following is a specification, reference being had to the accompanying drawings. y

My invention relates to improvements in 'fire' proof doors, shutters and similar structures, and-consists of the novel features'of construction and the combination and arrangement of parts hereinafter described and claimed.

The object of the invention is to provide a fire proof door or .the like especially adapted for use in oflice buildings and dwellings whichv will be ornamental and attractive in appearance and at the same time light, strong, durable and comparatively inexpensive in construction. v

The above and other objects of the invention, which will hereinafter appear, are attained in the construction illustrated in the accompanying drawings, in which- Figure 1 is a front elevation of a fire proof door constructed in accordance with my invention, parts being broken away and in section; Figs. 2 and 3 are enlarged detail sectional views taken respectively on the planes indicated by the lines 2-2 and 3-3 in Fig. 1; Fig. 4 is a transverse section through a door showing a slightly modiiied form of the invention; Fig. 5 is a detail section similar to Fig. 3 showing a transparent fire proof plate or sashwhich may be substituted for the wire glass shown in Fig. 3; and Fig. 6 is a detail view of the plate or sash shown in Fig. 5.

My improved door comprises a rigid frame 1, preferably of wood, covered with asbestos boards or sheets 2 and having its edges bound by a metallic frame 3. The frame 1 is of open rectangular or other form and the wood of which it is made is preferably dipped in or treated with some solution which will render it slow burning. It may be constructed of solid stock or of small stock glued or otherwise united.

The asbestos covering 2 is formed by stamping Sheets of asbestos cardboard between hot dies so thatit is given a shape corresponding to that of Vthe frame andl which resembles the panels and moldings of ordinary wooden doors. The `boards or sheets before being stamped or otherwise shaped are preferably dipped in a glutinous solution so that they will retain the desired shape and they vare thenl placed upon and united to the frame by suitable cement, Small brads or nails, rivets or any other suitable fastenings. By shaping the asbestos boardsin this manner the door is not only rendered ornamental and similar in appearance to ordinary doors, but air spaces 4 are formed between the two layers as more clearly shown in Fig. 2.

lf desired a single sheet or board of asbestos may cover one sideV of the frame as shown in Fig. 4, in which case the dies which shapethe same must be iiat and large, and consequently semen hat expensive; but as shown in the remaining figures of the drawings'the 'asbestos covering may be constructe of a plurality of small pieces which are individually stamped or shaped and united to each other and to the frame. Whensuch smaller pieces of asbestos board are used they may be readily shaped between rotary dies and consequently produced at a small cost.

When the covering 2 is made of a plurality of small sheets or boards their meeting edges are preferably overlapped as shown at 5 in,

Fig. 2andunited by brads or nails 6 or cement, or both.

'Ihe stamped portions of the boards or sheets which form the ornamental moldings of panels may, if desired, be reinforced by similar shaped strips of wood as indicated at 7. As above stated, the opposing sheets or boards which cover the opposite sides of the frame may be united to the latter or to each other by cement, ably employ rivets 8 for more effectively uniting said parts especially when they contact each other as shown in Fig. 2. rlhe asbestos covering is not only arranged upon both sides or faces of the frame but also upon its edges as indicated at 9.

When it is desired to have one or more transparent panels in the door or other structure, the asbestos boards or sheets are cut away to receive wire glass or the like 10, the edges of which are inserted between the voplposing asbestos sheets or boards and engaged with shoulders 11 formed in Wooden strips or moldings 12 arranged upon the frame 1 and r said between the asbestos boards as shown in Fig.

3. The glass is retained upon the shoulder 11 by strips of Wood 18 and small brads 14 are preferably employed vto securely unite parts.

T he frame l after being entirely covered with the asbestos boards or sheets 2 is bound by the metallic frame 3 Ywhich surrounds its edges and is formed With continuous inwardly extending' iianges l5 to engage the side faces ol' the door and more etlectii ely retain the covering` 2 thereon. l preferably form integral vith the metal l'raine 3 suitable points hinge members i6 vhich are adapted to engage co-actinp,l members upon the door or Winden frame in v hich the strueture is hung. The door may be painted, enameled or otherwise `finish-ed and ornamented as may be desired and as may be necessary to protect it from the Weather.

From the foregoing it 'will be seen that the invention provides a `lire proof door unich is not only eiiective but also ornamental and attractive in appearance so that it can be used in oflice buildings, dwellings and the like, and at the same time it is strong, durable and comparatively inexpensive in construction.

ln Figs. 5 and 6 of the drawings l have shou'n a rire proof transparent plate 18 which may be substituted for the vfire glass 10 shov n in Fig. Said plate 1S is in the lorm of a brass, aluminum, or other metal frame or sash i9 having openings 20 of any suitable form and size and closed by or covered With pieces of mica 2l. plate or sash constructed in this manner is lire proof and glass which might therein, sheets ol asbestos secured upon the entire surl ace ol" said door including; the sur rounding' edge portion. thereol', said sheets of asbestos having' staniped representations olt panels and moldings thereon iihich are arranged at suitable distances apart and l'itting in said rectz'rnfgjular openings, moldings havinf shoulders arranged upon the i'ranie and interposed between the asbestos boards, a transparent panel in one ol the rectangular openin having its edge projecting; between the asbestos material and havingr its surrounding edge ci'mtactin,nY with the shoulders ol the molding, rn Vans lor retainingy the transparent panel upon said shoulders, a metal bindingI extendin continuouslyaround the edges ol the asbestos on the edge el' the. door, comprising a metallic lranie secured continuously around and covering the edges el the asbestos on the edge of said door, and said metallic 1trame having llanges lorrned therewith pro vided With ,hingen su listantial ly specified.

ln testimony whereof l hereunto allix :my signature in the presence ot' tiro witnesses.

(l'llS E. i/lOUl/lY'lN Vilitnesses ARTHUR NOEL SMrri-r, ROBERT Don.

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